The worksheet generator on this page produces evaluating expressions worksheets with real, freshly randomised numbers — 20 of them per sheet by default — plus the answer key a parent or teacher needs to mark it quickly. Two of the problems on the sheet as it stands are Evaluate 2x + 6 when x = 4 → and Evaluate 3x + 2 when x = 6 → — answers 14 and 20 — and a new set is one click away.
‘New set of problems’ opens the generator in its own tab. There you can change the problem count and turn the answer key on or off. ‘Print or save as PDF’ opens the print dialog — choose Save as PDF in the printer list to keep the file. The sheet fits US Letter and A4, and the answer key prints on its own page.
This sheet uses coefficients to 9 and values of x to 9, so the arithmetic never gets in the way of the reasoning.
A one-step equation asks what value makes the two sides balance. Solving Evaluate 2x + 6 when x = 4 → gives 14, and the method — undo the operation on both sides — is the foundation of everything algebraic that follows.
The equals sign is a statement of balance, not an instruction to compute. Children who carry the primary-school reading of it into algebra struggle here first.
Whatever is done to one side must be done to the other. Saying that out loud every time for the first week builds the habit that makes multi-step equations manageable.
In US classrooms these evaluating expressions worksheets are commonly aligned with the expressions and equations strand for grade 6, though the exact wording varies from state to state.
| # | Problem | Answer | What to check |
|---|---|---|---|
| 1 | Evaluate 2x + 6 when x = 4 → | 14 | Watch for: losing a negative sign in the rearrangement |
| 2 | Evaluate 3x + 2 when x = 6 → | 20 | Check: not substituting back |
| 3 | Evaluate 3x + 3 when x = 5 → | 18 | Look at: using the same operation instead of the inverse |
| 4 | Evaluate 6x + 2 when x = 5 → | 32 | Ask about: operating on one side only |
| 5 | Evaluate 8x + 11 when x = 8 → | 75 | Watch for: dividing when the variable is added, not multiplied |
| 6 | Evaluate 7x + 9 when x = 8 → | 65 | Check: solving by inspection and getting lucky |
Take the first problem on the sheet as it stands, Evaluate 2x + 6 when x = 4 →. Work Evaluate 2x + 6 when x = 4 → out on paper rather than in your head the first few times, say each step aloud, and check the result against 14 on the key before moving on.
Try Evaluate 3x + 3 when x = 5 → together before letting the child start alone. The answer to Evaluate 3x + 3 when x = 5 → is 18, and talking through how it was reached takes about a minute and saves several minutes of guessing later in the sheet.
Every generated sheet carries its own key on a separate printed page, which lets a child self-mark without seeing the answers while they work.
The key prints on its own page by default. Uncheck the answer-key box before printing if you would rather keep it back and mark the sheet yourself.
Portrait orientation is what the sheet is designed for. Landscape works but wastes about a third of the paper, so leave the orientation alone unless you have a reason.
For a class set, print one sheet, press the new-worksheet button and print again. Each child gets different numbers on the same skill, so nobody can copy the answer to Evaluate 2x + 6 when x = 4 → from a neighbour.
Keep the finished evaluating expressions worksheets in date order — the drop in time across ten sheets is the clearest progress report you will get.
Free printable math worksheets from a working math academy director in Korea. Problems come from our own code, not from a published workbook. Every sheet prints on US Letter or A4 with its answer key. All worksheets · Worksheet generator · Korean site
Last updated: 2026-09-13